Ladder for silos.



E. H. C

LADDER F0 0S.

PPPPPPPPPPPPPPPPPPPPPPPPPP 5. 1 ,176,652. `Patented Mar. 21, 1916.

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LADDER FOR SILOS.

APPLICATION man SEPT. 21, 19\5.

1,176,652. Patented Mar. 21, 1916A INVENTOR ATTORNEY 1 COLUMBIA PLArjoGnAPH (10 WASHINGTON. nA C.

1ornp sra'rns PATENT union.

EARL H. CLARK, OF COON RAPIDS, IOWA.

LADDER FOR SILOS.

Application tiled September 21, 1915.

T 0 all whom t 'may concern.'

Be it known that 1, EARL H. CLARK, a citizen ot the United States, residing at Coon Rapids, in the county of Carroll and State of owa, have invented certain new and useful linprovements in Ladders for Silos, et' which the following is a specification.

his invention relates to an improved ladder which is intended to be connected with a silo and the principal object of the invention is to provide improved tracks ttor the upper and lower ends of the ladder and to also provide. improved means for connecting the ladder with the two tracks so that the ladder may move around the silo.

Another object ot the invention is to so construct the tracks that water may not collect in the saine and to further so construct the tracks that birds cannot build nests in the tracks and thus interfere with the tree movement of the ladder around the silo.

Another obiect of construct the ladder same that the ladder may now in use.

This device is illustrated in the accompanying drawings, wherein Figure 1 is a view in elevation of a silo provided with the improved ladder and tracks for the ladder. Fig. 2 is a transverse sec-tional view taken along the line 2-2 of Fig. 1. Fig. 3 is a sectional view through the upper track, the view being taken along the line 3-3 of Fig. 1. Fig. 4 is a transverse sectional view through the lower track, the view being taken along the line 4 4 of Fig. 1. Fig. 5 is a plan view of a section of one of the tracks.

The silo 10 rests upon the foundation 11 and is provided with a roof 12 having supporting beams 13 which carry the upper track. This upper track 14 is connected with the roof supporting beams 13 bv means of the hanger brackets 15 and is in the form of a pipe having a longitudinally extending slot 16 in its under face. 1t will thus be seen that any water striking the track by dripping off of the root or by driving against the track will not pass into the pipe and that therefore the inner face of the pipe will not be rusted. 1t should be further noted that this slot which is the onlv means of obtaining access to the interior of the invention is to so and the tracks for the be applied to silos Specification of Letters Patent.

Patented Mar. 21, 1916.

Serial No. 51,870.

is comparatively narrow and that therefore birds cannot build their nests in the track and thus interfere with the tree passage of the ladder 17 around the silo.

The lower track 18 is similar' in construction to the upper track and is formed of two sections as shown in Fig. 2 connected by the sleeves 19. Ot course, these sleeves 19 must be provided with slots which will register with the slots ZO of the lower track as otherwise the ladder could not pass the sleeves. This lower track is supported in spaced relation to the silo and the foundation 11 by means of the standards or brackets 221 which are embedded in the foundation and have their upper end portions curved to engage the upper face of' the track.

The ladder 1T is provided at its lower end with brackets 22 which are curved to eX- tend into the lower track. |These brackets are each provided with a pin or axle 23 which carries the two sections 24 of the lower roller. These rollers "24 are positioned in the lower track and rest upon the bottom port-ion thereof as shown in Fig. 4. Therefore the ladder can move freely around the lower track. The upper ends of the side bars of ladder 17 are also provided with brackets, these brackets 25 extending into the upper track and each being` connected with an aXle or pivot pin Q6 which carry the two sections ot the rollers 27. From an inspection of the drawings in this case it will be seen that this ladder will be slidablv mounted by means of the rollers Q4 and 27 and that due to this construction the ladder can oe very freely moved around the silo when desired. Therefore the silo can be changed or any necessary repairs made on the same without it being necessary to ouild a scaffold. 1t should he further noted that it it is desired to obtain access to the interior of the silo through one of the upper doorways 28. the ladder can be moved into the proper position.

That is claimed is t- A silo.. supporting brackets positioned adjacent the upper and lower ends of said silo. tubular tracks carried by said upper and lower supporting hrackets. and having their under faces provided with longitudinallv extending slots. a ladder. brackets extending from the upper end of said ladder into the slots of said upper track, curved the track brackets extending from the lower end of In testimony whereof I affix my signature said ladder and having ftheir free ends eX- tures, in-presenoe of witnesses.

tending into the slots o said lower track, i f and rollers rotatably connected With the in EARL u' CLARK ner ends of said ladder brackets and rest- Witnesses:

ing upon the lower portions of said track C. B, BowMAN,

and bridging the slots formed therein. lV. E. MAYBAY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

